US10673012B2ActiveUtilityA1

Panel bottom sheet and display device including the same

86
Assignee: SAMSUNG DISPLAY CO LTDPriority: Jun 19, 2017Filed: Jun 15, 2018Granted: Jun 2, 2020
Est. expiryJun 19, 2037(~10.9 yrs left)· nominal 20-yr term from priority
Inventors:Min Seop KimKyung Jun ParkJeong Seok OhWon-Il Lee
H01L 51/529G06F 2203/04102B32B 7/12B32B 27/08H01L 51/5237G06F 3/0412H01L 27/323B32B 2457/206H01L 51/0097B32B 7/06B32B 2457/208H10K 2102/311H10K 50/87H10K 50/8428H10K 59/8794H10K 59/8723H10K 59/87H10K 50/84B32B 15/08B32B 17/06H10K 77/111H10W 99/00H10W 72/30H10K 59/40Y02E10/549B32B 2379/08B32B 9/007B32B 27/286B32B 27/281B32B 2307/212B32B 2255/24B32B 15/095B32B 15/09B32B 2255/12B32B 15/082B32B 9/06B32B 9/045B32B 9/041B32B 2250/44B32B 3/28B32B 2457/202B32B 23/08B32B 27/10B32B 3/266B32B 2307/51B32B 2307/748B32B 2307/546B32B 2255/20B32B 2307/75B32B 27/308B32B 2255/10B32B 27/325B32B 27/36B32B 27/40B32B 27/365B32B 27/32B32B 3/30B32B 2307/7265B32B 2255/28B32B 27/306B32B 27/283B32B 15/20
86
PatentIndex Score
4
Cited by
13
References
31
Claims

Abstract

A panel bottom sheet and a display device including the same are provided. The panel bottom sheet comprises a main sheet, a bonding member disposed on a bottom surface of the main sheet and partially exposing the bottom surface of the main sheet, a release film disposed below the bonding member, and a spacer disposed between the release film and the bottom surface of the main sheet. The bottom surface of the main sheet is divided into a cover region in which the bonding member is disposed and an exposed region which is exposed by the bonding member. The release film is disposed to overlap with the cover region and the exposed region, and the spacer is disposed to overlap with the exposed region.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A panel bottom sheet, comprising:
 a main sheet; 
 a bonding member disposed on a bottom surface of the main sheet and partially exposing the bottom surface of the main sheet; 
 a release film disposed below the bonding member; and 
 a spacer disposed between the release film and the bottom surface of the main sheet, 
 wherein: 
 the bottom surface of the main sheet is divided into a cover region in which the bonding member is disposed and an exposed region which is exposed by the bonding member, 
 the release film is disposed to overlap with the cover region and the exposed region, and 
 the spacer is disposed to overlap with the exposed region. 
 
     
     
       2. The panel bottom sheet of  claim 1 , wherein the spacer is disposed to be spaced apart from the bonding member. 
     
     
       3. The panel bottom sheet of  claim 2 , wherein a bottom surface of the spacer is bonded to the release film. 
     
     
       4. The panel bottom sheet of  claim 3 , wherein the top surface of the spacer is bonded to the bottom surface of the main sheet. 
     
     
       5. The panel bottom sheet of  claim 4 , wherein:
 the spacer includes a spacing member, a bottom bonding layer disposed on a bottom surface of the spacing member, and a top bonding layer disposed on a top surface of the spacing member, and 
 a bonding force between the top bonding layer and the bottom surface of the main sheet is weaker than a bonding force between the bottom bonding layer and a top surface of the release film. 
 
     
     
       6. The panel bottom sheet of  claim 3 , wherein a top surface of the spacer is not physically bonded to the bottom surface of the main sheet. 
     
     
       7. The panel bottom sheet of  claim 6 , wherein the spacer includes a single-sided tape having a spacing member and a bottom bonding layer disposed on a bottom surface of the spacing member. 
     
     
       8. The panel bottom sheet of  claim 6 , wherein the spacer includes a coating layer or a printed layer formed directly on a top surface of the release film. 
     
     
       9. The panel bottom sheet of  claim 1 , wherein a thickness of the spacer is the same as a thickness of the bonding member. 
     
     
       10. The panel bottom sheet of  claim 1 , wherein:
 the cover region is located at a central portion of the bottom surface of the main sheet, and 
 the exposed region is located along edges of the bottom surface of the main sheet. 
 
     
     
       11. The panel bottom sheet of  claim 10 , wherein the spacer is disposed continuously along edges of the release film. 
     
     
       12. The panel bottom sheet of  claim 1 , wherein the bonding member includes a double-sided tape. 
     
     
       13. The panel bottom sheet of  claim 1 , further comprising:
 a top bonding layer disposed on the top surface of the main sheet. 
 
     
     
       14. The panel bottom sheet of  claim 13 , wherein:
 the top bonding layer is larger in size than the bonding member, and 
 a side of the bonding member is positioned more inwardly than a side of the top bonding layer. 
 
     
     
       15. The panel bottom sheet of  claim 1 , wherein the main sheet includes at least one heat dissipation layer. 
     
     
       16. The panel bottom sheet of  claim 15 , wherein the main sheet further includes a first heat dissipation layer, an interlayer bonding layer disposed on a top surface of the first heat dissipation layer, and a second heat dissipation layer disposed on a top surface of the interlayer bonding layer. 
     
     
       17. The panel bottom sheet of  claim 16 , wherein sides of the second heat dissipation layer are positioned more inwardly than sides of the first heat dissipation layer. 
     
     
       18. The panel bottom sheet of  claim 15 , wherein the main sheet further includes a buffer member disposed above the at least one heat dissipation layer. 
     
     
       19. The panel bottom sheet of  claim 18 , wherein the main sheet further includes a digitizer disposed between the at least one heat dissipation layer and the buffer member. 
     
     
       20. A display device, comprising:
 a display panel; and 
 a panel bottom sheet disposed below the display panel, the panel bottom sheet including a main sheet, a bonding member disposed on a bottom surface of the main sheet and partially exposing the bottom surface of the main sheet, a release film disposed below the bonding member, and a spacer disposed between the release film and the bottom surface of the main sheet, 
 wherein: 
 the bottom surface of the main sheet is divided into a cover region in which the bonding member is disposed and an exposed region which is exposed by the bonding member, 
 the release film is disposed to overlap with the cover region and the exposed region, and 
 the spacer is disposed to overlap with the exposed region. 
 
     
     
       21. The display device of  claim 20 , wherein the spacer is disposed to be spaced apart from the bonding member. 
     
     
       22. The display device of  claim 21 , wherein a bottom surface of the spacer is bonded to the release film. 
     
     
       23. The display device of  claim 20 , wherein a thickness of the spacer is the same as a thickness of the bonding member. 
     
     
       24. The display device of  claim 20 , wherein:
 the cover region is located at a central portion of the bottom surface of the main sheet, and 
 the exposed region is located along edges of the bottom surface of the main sheet. 
 
     
     
       25. The display device of  claim 24 , wherein the spacer is disposed continuously along edges of the release film. 
     
     
       26. The display device of  claim 20 , wherein the bonding member includes a double-sided tape. 
     
     
       27. The display device of  claim 20 , wherein:
 the main sheet includes a first heat dissipation layer, an interlayer bonding layer disposed on a top surface of the first heat dissipation layer, and a second heat dissipation layer disposed on a top surface of the interlayer bonding layer, and 
 a side of the second heat dissipation layer is positioned more inwardly than a side of the first heat dissipation layer. 
 
     
     
       28. The display device of  claim 27 , wherein the main sheet further includes a buffer member disposed above the at least one heat dissipation layer. 
     
     
       29. The display device of  claim 28 , wherein the main sheet further includes a digitizer disposed between the at least one heat dissipation layer and the buffer member. 
     
     
       30. The display device of  claim 20 , wherein:
 the display device has a flat area and bending area disposed adjacent to the flat area, and 
 the display panel and the panel bottom sheet are positioned in both the flat area and the bending area. 
 
     
     
       31. The display device of  claim 30 , wherein
 the cover region is located within the flat area and does not overlap with the bending area, and 
 the exposed region overlaps with the bending area.

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